A crate pushed along the floor with velocity →vj vj slides a distance d after the pushing force is removed. a. If the mass of the crate is doubled but the initial velocity is not changed, what distance does the crate slide before stoping? Explain.
b. If the initial velocity of the crate is doubled to but the mass is not changed, what distance does the crate slide before stopping? Explain.

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c